1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835536f8442523035364a833c4f8c3afcf8ea88a42cc9027af7d282f4cb9350. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9733fe81-1904-46cd-8572-b5f672ea205c.json and https://artists.proofprofile.net/proofs/artist/9733fe81-1904-46cd-8572-b5f672ea205c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04238dd3ec01015d735025e42326d2094f582ce9974f0f02aebcca0e18c18cb8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL5BT2100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0336d4feb406d61fd06c5729985449d08fef6b0254fd1dc6e718cec52e58b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL5BT2100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa4697d6d0963139128822026d3f498d601eebce72c54eb8bf6a18817b6c084. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPQ62201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4d4a9af26f65c811ee9bff0a67ddcc85586e96148145d87a242b6b398099d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472279745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50543d56c1d80a115b0eb328117254bbffe1b7ead513a1b3ed92717c73d0571b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472279747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10605be93f6e50ce74097b82f3965b85dbf75a0e23d1a9b7f2c22896bac84395. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2310760.
The Call of the Samurai (Joe Carl Remix)
The Call of the Samurai - Joe Carl Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3526241204a875b9b027cc9e48fba57e27b7505567ac6df970b13360e8932310. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2310763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386e205225b94ef662f6cfd6541237f8361d4335e4cce65972409e763663c18f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPQ62201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802dfc2bd9965d7463fd4303a765d591542e2a6076a788300113ca7dfb7b20b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2222893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10605be93f6e50ce74097b82f3965b85dbf75a0e23d1a9b7f2c22896bac84395. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2310760.